Wind turbine



FIG. 1 is a front elevation view of a wind turbine showing the new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a right side elevation view thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is a perspective view thereof;

FIG. 8 is a partial detailed view of FIG. 1 ;

FIG. 9 is a partial detailed view of FIG. 2 ;

FIG. 10 is a partial detailed view of FIG. 3 ;

FIG. 11 is a partial detailed view of FIG. 4 ;

FIG. 12 is a partial detailed view of FIG. 5 ;

FIG. 13 is a partial detailed view of FIG. 6 ; and,

FIG. 14 is a partial detailed view of FIG. 7 .

The broken lines shown represent the portions of the wind turbine that form no part of the claimed design. 

CLAIM The ornamental design for a wind turbine, as shown and described. 